The coemcient of thermal expansion and the dynamic response to pulsed energy deposition were investigated in the 25 to 60 mol% TiO, region of the system HfO,-TiO,. Thermal expansion results revealed very low coefficients (-1 x lO-'PC) for the 30 to 40% compositions and relatively high coefficients ( 2 3 x lO-'YC) for the 45 to 60% TiO, compositions. The 25% TiO, composition fell between these two groups. Dynamic response measurements revealed considerably lower free surface velocities for the 30 to 40% TiO, compositions than for the 45 to 50% TiO, compositions. Calculation of Grueneisen parameters, using the thermal expansion and dynamic response data, revealed low values for the 30 to 40% TiO, compositions and an increase by a factor of 2 to 3 for the 45 and 50% Ti02 compositions.
A unique long-path absorption cell has been developed for spectroscopic studies of alpha radioactive compounds. The cell is temperature programmable from room temperature down to 100 K and has an optical path length up to 0.5 km. Special design features and performance characteristics are described.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.